# std::experimental::simd_mask<T,Abi>::copy_from

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< cpp‎ | experimental‎ | simd‎ | simd mask

template<class Flags> void copy_from( const bool* mem, Flags flags ); |  | (parallelism TS v2)

The load function replaces all elements of a `simd_mask` such that the i-th element is assigned with `mem[i]` for all i in the range of `[`​0​`,` `size()``)`.

### Parameters

mem | - | a pointer into an array where [`mem`, `mem + size()`) is a valid range
flags | - | if of type `vector_aligned_tag`, the load constructor may assume `mem` to point to storage aligned by `memory_alignment_v<simd_mask>`
Type requirements
- `is_simd_flag_type_v<Flags>` must be true.

### See also

element_aligned_tagelement_aligned (parallelism TS v2) | flag indicating alignment of the load/store address to element alignment (class)
vector_aligned_tagvector_aligned (parallelism TS v2) | flag indicating alignment of the load/store address to vector alignment (class)
overaligned_tagoveraligned (parallelism TS v2) | flag indicating alignment of the load/store address to the specified alignment (class template)
memory_alignment (parallelism TS v2) | obtains an appropriate alignment for `vector_aligned` (class template)
(constructor) (parallelism TS v2) | constructs a `simd_mask` object (public member function)
copy_to (parallelism TS v2) | stores `simd_mask` elements to contiguous memory (public member function)
copy_from (parallelism TS v2) | loads `simd` elements from contiguous memory (public member function of `std::experimental::simd<T,Abi>`)

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